Power propelled cultivator



. April 26, 1938.

J. J. STEWART ET AL 2,115,220

POWER PROPELLED CULTIVATOR Filed Nov. 17, 1936 INVENLI'ORS JAMES JOSEPH STEWART BERT THOMAS ATT-ORNEVS 20 chassis or framework for varying the distance Patented Apr. 26, 1938 umrED T TE tv r .Bowers PRorEiLEDQoU TwAroa;f

v f James"Jbsepli jstewart and ert'ThoinaSQGordon j v A plication November 17,iafsgseri tn g,111,278

In Australia November 26, 1935 2 Claims. (01. 97-47) This invention relates to power propelled cultiin its uppermost limiting position by fixed collar vators and has for its object the provision of II. The lower ends of the said tension rods I means whereby a motor driven chassis to which are held between fixed collars I4 at the bottom the cultivator is attached may be driven between and sliding collar 9 at the top. The framework rows of cane and the like and avoid damage to consists of two main cross members I2 and I5 5 the cane whilst effectively and rapidly cultivating. and longitudinal members I6. The tine carrying According to the invention an automobile arms I'I, I8, I9, 20 and 2I at their inner ends chassis is used adapted to pass between standard are rigi y Secured to cross member I5 by 10011?- rows of cane. sheet iron guards are provided in in or other means nd n ar ir middle p r i n 10 front of and to the side of the front wheels to are securely held tocross member, I2 by sheaves 10 prevent the wheels and forward portion of the 22. The tw ou r n rrying rms 23 and 24 chassis coming into contact with cane which has at their inner ends, pivoted to c o s mem got out of hand. The rear driving wheels are of l5 y pivots Z3 and Test On p Near their larger diameter than the forward wheels. At the middle Portion these tine a y arms 3 a d 16 rear of the chassis a framework is hingedly con- 24 p through s s in fl n e 21 o c oss memnected to the chassis, or a prolongation thereof, Tine carrying arms 23 n 24 are adaptand has secured to it a series of tine cultivators, ed to b ve l a y d radially about p ivthe two outside tines being connected by levers 017$ 25 by means of hand level 28 and links and links to a hand lever mounted upon the 39, 3| and 32. Link 29 is pivoted to lever 28 and is secured to link 30 which latter is pivoted by bracket 33 to arm 23 and at its other extremity to link 3I by pivots about pin 34 at its centre and is pivotally connected to link 32 at its other carry1 ng the tmes hmged at one end of the end, link 32 being pivoted to bracket 33 on arm chassis, or prolongation thereof, and suspended 24 The quadrant 351s mounted upon the angle 2! o from it and is raised orlo-weredby a hand lever 36 upon cross member '2 and is adapted to be and quadrant. ,The said lever is spring loaded engaged by pawl on hand lever Upon each enabling the depth of the tines to be set, and Side f the framewgrk we provide springy memfor enabling the cultivator tines to free themhers 31 and 33 secured t their ends to cross s lv f m y so1id submerged object In lieu member I5. Tine brackets 39, forked at their 30 of the tines small plows maybe secured to the upper ends, are secured to the tine carrying arms between them, and thus allowing for variations in the width of the rows of cane. The framework framework. I! to 24 inclusive, and at their lower ends are The invention will now be described with refprovided with means for attaching tines 40. erence to the accompanying drawing, whereinz- Stays 4I, forked at both ends, are secured re- Figure l is a plan view showing the end of the i spectively at their upper ends and low-er ends to 5 V chassis, and omitting the operating handles, the tine carrying arms H to 24 inclusive and to spring lifting gear and lifting levers for clarity; tine brackets 39. Longitudinal members I6 of the Figure 2 is a part sectional elevation on line frame are pivoted at their inner ends to chassis A-A of Figure 1 omitting cane guards. members I by pins 42 or other suitable means.

The invention may be applied to any form of In operation when it is desired to raise the tines 40 motor vehicle chassis. The rear longitudinal from the ground the lever 4 is manipulated in a members of the chassis may be lengthened or forward direction thereby turning shaft 5 and otherwise adapted for carrying the framework, rotating arms 6 in an upward direction which or extensions may be bolted or otherwise secured lifts loose collar 9 thereby lifting rod I0. When 5 to the chassis. In the drawing the longitudinal it is desired to increase or decrease the width 45 chassis members I are extended and bent upbetween the two outer tines the lever 28 is moved wardly as at 2. At the ends of the chassis exwhich in turn actuates the various links 29 to 32.

tensions 2 we mount a quadrant 3 and pivot a Upon an obstruction being met tines 49 are enlever 4 provided with pawl for engagement with abled to rise by lifting the frame thereby forcing the said quadrant 3. The said lever 4 is secured tension rod I0 up through sliding collar 9 which 50 to a shaft 5 to which are attached two lifting compresses spring I3 between sliding collar 9 arms 6 secured by set screws 1 which lifting arms and fixed collar 40. Upon the obstruction being 6 have forked ends 8 within each of which is passed the tines are forced back to their work pivoted a sliding collar 9 at the upper end of a by the said spring I3.

tension rod II]. The said sliding collar 9 is held We claim: 55

I l. The improvements in power propelled cultivators consisting of an extension of the chassis rear longitudinal members having upwardly bent ends; aquadrant secured to said upwardly bent ends of said chassis members; a shaft mounted at the ends of said chassis members; a, hand lever secured to said shaft and a pawl upon said hand lever adapted to engage said quadrant; arms secured to said shaft; lifting rods pivoted to a vframework at one'end and passing through the ends of said arms; springs surrounding said rods between fixed collars at the bottom and sliding collars at the top, said sliding collars con- I tasting with fixed collars upon the said rod; longitudinal members hinged atone end to the chassis; lateral members secured .to said longitudinal members; inner tine carrying arms seother end to a straightwbarpivoted centrally and 1 actuated by another lever connected :to it and to the hand lever substantially as described.

2. A propelled cultivator as 'claimedgin claim 1, in which the inner tine carrying arms are fixed againstlateral radial movement, and the outer tine carrying arms have lateral radial movement substantially as described.

JAMES JOSEPH STEWART. "BERT THOMAS. 

